The Question:

Is the caloric value of white wine different from that of red
wine? In other words—if I drink the same volume of red and white wine,
will I consume the same number of calories?

The Answer:

The number of calories in red wine and white wine does differ
slightly; typically, four ounces of white wine have about five
calories less than red wine. With that said, the number of calories in
different varieties of wine differ far more; the higher the alcohol
content, the higher the calorie count.